Design and characteristics of the quasi-PTS laser. (IMAGE)

Light Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS

Design and characteristics of the quasi-PTS laser.

Caption

a. Isospectral engineering can establish quasi or modal PT-symmetry by enforcing a resonant interaction between the second-order mode of the primary potential and the fundamental mode of its lossy partner by a careful choice of cavity dimensions. In this configuration, electrical pumping of the main potential allows for single-mode lasing. b. an SEM image of the laser facet. c. LI curve comparing a standard single waveguide laser to a quasi PT-symmetric design. d. beam quality factor measurements for standard and PT-symmetric lasers versus power.

Credit

by Enes Şeker, Babak Olyaeefar, Khalil Dadashi, Serdar Şengül, Mohammad Hosain Teimourpour, Ramy El-Ganainy, and Abdullah Demir

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Credit must be given to the creator.

License

CC BY

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